Multi-category conversions

Universal Unit Converter

Convert length, weight, temperature, volume, and more in one place.

Length & weight Temperature & speed Time & data size
All-in-one

Reliable conversions

Enter a value, pick units, and get instant accurate conversions plus a table of other units.

Main tool

Convert any unit in seconds

Choose a category, pick from/to units, and see conversions instantly.

Universal unit converter for everything in one place

Convert length, weight, temperature, volume, area, speed, time, and data size from a single interface—no more juggling multiple tools.

Popular conversions

  • Length: cm to m, m to feet, km to miles
  • Weight: kg to lb, g to oz
  • Temperature: Celsius to Fahrenheit, Fahrenheit to Celsius
  • Speed: km/h to mph, m/s to km/h
  • Data: MB to GB, KB to MB

How to use this unit converter

  1. Choose your conversion type (e.g., length, weight, temperature).
  2. Enter a value and pick the from and to units.
  3. Click Convert to see the result.
  4. Check the extra table to see the same value in other units for that category.

Works on desktop, tablet, and mobile—no installs needed.

FAQ – Universal Unit Converter

Is this unit converter free to use?

Yes. No login or payment required.

Which unit categories do you support?

Length, weight/mass, temperature, volume, area, speed, time, and data size.

How accurate are the conversions?

We use precise conversion factors and correct temperature formulas.

Can I convert temperature, like Celsius to Fahrenheit?

Yes—Celsius, Fahrenheit, and Kelvin are supported.

Do you support currency conversion?

No. We focus on physical units only.

Does this work on mobile devices?

Absolutely. The layout is fully responsive.

Do you store any of my conversion data?

No. Conversions are processed on the fly without saving your inputs.

Popular conversions people search for: convert cm to inch, inch to cm, cm to feet, feet to cm, meter to feet, feet to meter, km to miles, miles to km, mm to cm, m to km, g to oz, oz to g, kg to lb, lb to kg, stone to kg, tonne to kg, Celsius to Fahrenheit, Fahrenheit to Celsius, Celsius to Kelvin, Kelvin to Celsius, km/h to mph, mph to km/h, m/s to km/h, knot to km/h, l to ml, ml to l, gallon to liter, liter to gallon, cup to ml, tbsp to ml, tsp to ml, acre to hectare, hectare to acre, m² to ft², ft² to m², byte to KB, KB to MB, MB to GB, GB to TB, seconds to minutes, minutes to hours, hours to days, days to weeks, weeks to months, and months to years. This universal unit converter is designed to handle “convert X to Y” across length, weight, temperature, volume, area, speed, time, and data size—fast, accurate, and mobile friendly.

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